Guillotine paper cutters-back gage control



Jan. 10, 1967 c. THUMIM 3,297,131

GUILLOTINE PAPER CUTTERS-BACK GAGE CONTROL Original Filed Sept. 16,1959- 8 Sheets-Sheet 1- J INVENTOR.

C. THUMlM Jan. 10, 1967 GUILLOTINE PAPER CUTTERS-BACK GAGE CONTROLOriginal Filed Sept. 16

8 Sheets-Sheet 2 Jan. 10, 1967 c. THUMlM 3,297,181

GUILLOTINE PAPER CUTTERS-BACK GAGE CONTROL Original Filed Sept. 16, 1959,8 Sheets-Sheet 5 Jan. 10, 1967 c. THUMIM GUILLOTINE PAPER CUTTERS-BACKGAGE CONTROL Original Filed Sept. 16, 1959 8 Sheets-Sheet 4 Q\N QQ 6INVENTOR. ewe; r/M/M/M Jan. 10, 1967 c. THUMIM GUILLOTINE PAPERCUTTERS'BACK GAGE CONTROL Original Filed Sept. 16, 1959 8 Sheets-Sheet 5Jan. 10, 1967 c. THUMIM 3,297,181

GUILLOTINE PAPER CUTTEHS-BAGK GAGE CONTROL Original Filed Sept. 16, 19598 Sheets-Sheet 6 INVENTOR. guy/e; 77/flM/M Jan. 10, 1967 C. THUMIMGUILLOTINE PAPER CUTTERS- B A CK GAGE CONTROL Original Filed Sept. 16,1959 8 Sheets-Sheet 7 0574015, E9652, $523 f JEFFEM Jan. 10, 1967 c.THUMIM 3,297,181

GUILLOTINE PAPER CUTTERS-BAGK GAGE CONTROL Original Filed Sept. 16, 19598 Sheets-Sheet 8 BY 0577404 E/VK, fkaig 6625 Jar-FEM A rry/e/Vkr UnitedStates Patent 0 3,297,131 GUILLOTINE PAPER CUTTERS-BACK GAGE CGNTROLCarl Thnmirn, Westhury, N.Y., assignor to The Lawson Company Division ofMiehle-Goss-Dexter, Incorporated, a corporation of New York Driginaiapplication Sept. 16, B59, Ser. 840,281, now Patent No. 3,174,370, datedMar. 23, 1965. Divided and this application Dec. 31, 1964, Ser. No.429,702 4 Claims. (Cl. 214-152) This is a division of Patent No.3,174,370 issued March 23, 1965, with respect to which the applicationwas filed September 16, 1959.

This invention relates to magnetic tape control systems for controllingthe operation of the back gauge of guillotine type paper cuttingmachines.

In the operation of guillotine type paper cutters, a pile of paper isplaced on the work table beneath the cutting knife. The back gaugeprovided on the work table is adjusted so that the portion of the pilewhich it is de-' sired to cut ofi extends forward of the cutting knifeedge. Thus, when the reciprocable knife blade is brought down, it willcut off an exactly dimensioned section of the pile.

In operating paper cutters of this type, it frequently becomes necessaryto adjust the position of the back gauge many times for the differentcuts which are to be made, such as on a printed pile of sheets. Even ifa plurality of regular cuts are to be made from a single pile, the backgauge must be moved up each time to a precise position, with the forwardedge of the motivated pile perfectly squared, so that the exact desiredcut may be made.

In general usage, the heavy stack of sheets on the work table is broughtup rapidly by the back gauge to near the point where it is to bestopped. Thereafter, it is slowed down, and then finally brought to astop. Such slow-down interval prevents a sudden stop of the heavy backgauge and avoids causing the heavy paper pile to cross beyond apredetermined position.

The fiinal speed of the back gauge may be as little as 1% of the fastforward speed at which the paper pile is brought up close to theslow-down and stopping position. Preferably, the reinitiation of theback gauge cycle of operation to the next cutting position is arrangedso that the lifting of the knife and clamp clear of the paper piletowards their nesting position resets the control apparatus through aswitch.

Reference is made to my copending patent application Serial No. 580,200filed on April 24, 1956, now Patent No. 2,860,705, for Photo-electricControlled Back Gauge, assigned to the assignee of this case. Thepresent invention is in the nature of an improvement over such priormethods that utilize photo-electric scanning of signal bars. The signalbars therefore were bulky hexagonal members that required carefulhandling and storage. Precision placement of signals along the bar inaccordance with a mechanically preset program of cutting generallyrequired a large amount of skilled labor time. The program bars wereprecision units and costly.

In accordance with the present invention I provide novel magnetic tapearrangements that automatically provide an accurate reusable programrecord in less than one minute or one that can be set up manually pointby point. Also, the cost of the program record is negligible, with nostorage problems. One tape may readily contain twelve, twenty-four ormore programs, each readily and directly selectable. A simple templatemarked with the cutting stop positions for any program to be set-up isscanned, and synchronized for creating corresponding magnetic tapesignals.

An important feature of the present invention is the novel dual magneticcontrol effected on the back gauge drive to decelerate its fast forwardmotion to a slow speed for a predetermined interval before each stopposition. Commercial cutting machine today use a seven inch per secondfast forward (and reverse) speed. The slow speed drive is of the orderof onesthirtieth thereof, or 0.20" per second.

The massive back gauge may now readily stop on the magnetic stop signalwithout overshoot.

The aforesaid application discloses a dual motor drive with both highand slow speed connections to the back gauge. The magnetic controlsystem of the present case initiates the slow speed drive, disconnectingthe high speed one, during a predetermined interval before each magneticstop signal. This is accomplished by utilizing a distinctive slow periodmagnetic signal which is impressed up on the tape for a distancecorresponding to say one-seventh of a second prior to the stop, or forabout oneinch of travel of the back gauge. Such interval may, of course,be different for particular machines. The one second interval has beenfound to work out very satisfactorily for large cutting machines.

The magnetic control system of the present invention involves, on oneembodiment, a novel dual track control, with a magnetic pulse impressedon the stop track for each synchronized stop position. Such positionsare determined by photo-electric scanning of a linear template of eachprogram, with pulse signals created for recording on this track. Thecompanion track is impressed with a high frequency signal by circuitmeans initiated by the pre-determined interval ahead of the stop signalposition.

In this manner, two pick-up heads :and associated circuitry effect theaforesaid control on the dual speed back gauge drive. Alternatively, asingle control track and pick-up head can be used.

When the cutting machine is used to cut labels or other materialsprinted upon the sheets of the pile of paper, the back gauge may berequired to move forward an inch or more between each cutting operation.However, on printed sheets where many narrow rows of labels or the likeappear, or narrow spaces that must be cut out between labels, after theback gauge has been moved forward several cycles of fast to slow speedto stop, for cutting a series of printed Wide label rows, it wouldbecome necessary that the back gauge be moved forward by only a fractionof an inch to permit the cutting or trim out of narrow labels or smallunprinted strips. In the latter case, after a main cut, the back gaugeshould move forward at its slow speed and then come to a stop for thenearby trim-out cut. The invention system effects such action in thatwhere any stop signal is called for prior to the expiration of theone-seventh second slow signal, the slow signal is correspondinglyextended a full one-seventh of a second. Further, in accordance with theinvention hereof, a novel photo-electric scanning unit, which may beportable as will be shown, is provided having means for predeterminedclamping with respect to the knife cutting edge. v

The scanning spot is thereby directed atthe template markings as theypass the cutting edge position. With the magnetic tape synchronized withthe back gauge and template moved thereby, precisely located stopsignals are recorded on the tape by the scanner and associated circuitryas will be set forth in details hereinafter. When the back gaugs ismoved forward, in operation, the tape is driven forward therewith, andthe pick-up heads derive the control signals for accurate slowing downand stopping of the back gauge, automatically.

The magnetic tape, control heads and drive therefor are housed in arelatively compact space in the machine body. Utilizing sprocket drivenfilm of conventional 35 mm. size, magnetically coated, I obtain twelvedual or 24 single control tracks or programs. A rugged, accurate, longlasting practical apparatus is provided herein. The magnetic heads areselectively positioned with respect to the desired tracks or programs bysimple novel mechanism to be described. Also, the insertion and removalof the magnetic tape is readily performed and directly indexed as willbe set forth.

It is accordingly an object of the present invention to provide a novelmagnetic control system for programmed deceleration and stopping of aback gauge of a cutting machine.

Another object of the present invention is to provide a novel magneticcontrol system synchronized with desired programs for stopping a backgauge, with novel magnetic means for decelerating the back gauge inpredetermined relation to the stops.

A further object of the present invention is to provide a novel magneticcontrol system for the multiple programming of a back gauge of a cuttingmachine into slow and stop positions.

Still another object of the present invention is to provide a novelmagnetic control system with circuit arrangements for synchronouslyimpressing signals on a magnetic tape for programming predetermined slowand stop control positions of a back gauge.

Still further object of the present invention is to provide a novelmagnetic control system for a guillotine cutting machine, with aplurality of programs directly selectable for operation of the backgauge thereof.

These and further objects of this invention will become more apparentfrom the following description of exemplary embodiments thereof,illustrated in the accompanying drawings, in which:

FIGURE 1 is a side elevational view of a guillotine paper cuttingmachine incorporating the invention system.

FIGURE 2 is a plan view of the machine of FIGURE 1.

FIGURE 3 is an end view of the motor drive mechanism for the back gaugecorresponding to FIGURES 1 and 2, enlarged to show details thereof,being the view taken at line 3-3 of FIGURE 1 in the direction of thearrows.

FIGURE 4 is a plan view of the motor drive mechanism shown in FIGURE 3,with the work table thereof partially broken away.

FIGURE 5 is a schematic showing of the exemplary back gauge drive andmagnetic control tape synchronized therewith.

FIGURE 5A is a cross sectional view through the dual pulley drivesection of the motor drive mechanism.

FIGURE 6 is a schematic diagram of an exemplary magnetic tape controlsystem; and circuitry therefor.

FIGURE 7 is a circuit diagram of a portion of the control system ofFIGURE 6.

FIGURE 7A is a schematic showing of the automatic drive control circuit.

FIGURES 8 through 11 are diagrams of modified magnetic tape controlsystems in accordance with the invention.

FIGURES l and 2 illustrate a typical paper cutting machine structure, asillustrated in the aforesaid patent application. The cutting machinecomprises a work table 100 carried between upright side frame casings101, 101. Side frame casings 101, 101 are cross-braced by cross-member102. Work table 100 and side frame members 101, 101 extend from and arebasically secured to base 103 of the cutter machine.

The paper cutting mechanism comprises a reciprocable knife bladearranged between side frame casings 101, 101 and cross member 102. Asuitable clamping arrangement is generally provided with the cuttingknife mechanism. The mechanism for operating the reciprocable cuttingblade and clamp is generally contained underneath the work table 100 andwithin the base 103. The cutting blade assembly and its operatingmechanism are not shown in :he drawings, for clarity purposes, as theyform no particular feature of novelty per se, it being understood thatsuitable means well known in the art are utilized therefor.

Back gauge 105 comprises a metal casting 106 which extends transverselyacross cutting table 100. Back gauge 105 has a plurality of forwardextensions 107 seen in FIGURE 2. The aligned front edges of forwardextensions 107 form the back gauge surface which coacts with the pile ofsheets to be cut by the machine.

Work table is provided with a central longitudinal slot 108 throughwhich a depending bracket 100 of back gauge extends downwardly. The slot108 forms a track for the back gauge bracket 110 and for the back gaugein its longitudinal traverse along work table 100. A nut 111 is formedin an extension of the back gauge bracket 110 and is in threadedengagement with the back gauge feed screw 112.

It is understood that rotation of feed screw 112 causes back gauge 105to traverse work table 100 longitudinally in a forward or rearwarddirection depending on the sense of rotation of the feed screw; and thatthe speed of traverse of back gauge 105 is proportional to the rate ofrotation of the feed screw. Furthermore, in view of the positiveengagement between feed screw 112 and nut 111 of the back gauge,accurate positioning of the back gauge is feasible as will be set forth.

Feed screw 112 is rotatably carried beneath slot 108 of work table 100,in front bearing 113 mounted under the forward extension 100a of table100, and the rear bearing at the opposite end. The front end (right) offeed screw 112 is provided with a hand wheel 115 for manual operation ofthe back gauge 105 through the feed screw. The rear end (left) of backgauge lead screw 112 is provided with a double pulley 120.

Two drive belts 121, 122 coact with pulley through the motor drivemechanism 125 under the control of the automatic and/or manual control,to be described. Lead screw 112 is mounted so that while it may rotatefreely, it has no longitudinal movement. Accordingly, rotation of screw112 by either operating mechanism 125 through pulley 120, or manuallythrough hand wheel 115, results in a corresponding longitudinal movementof the back gauge 105 across work table 100 at a speed and direction inaccordance with the rotation of lead screw 112.

The back gauge 105 is automatically programmed in its start, slow, stopcycles by the magnetic control system, located for example in base 103,and the operating motor drive 125 controlled thereby as will bedescribed in detail. The tape channel or program selector 126 is seen atthe side of base 103. A simple turn of detented selector 126 promptlyplaces the desired program in action. The exact location of back gauge105, or rather the exact distance of its operating front face 107 fromthe cutting knife edge position is indicated at the front of the cuttermachine for the operation. Approximate indicating means, not shown butwell known in the art, is provided therefor.

Electric motor drive system The electric drive system 125 operates onthe rear end of back gauge lead screw 112 through double grooved pulley120 secured to the lead screw. FIGURES 3 and 4 illustrate a particularembodiment for the motor drive 125 supported beneath the rear end (left)of the Work table 100. Work table 100 is shown in dotted lines in thesetwo figures; and in the plan view of FIGURE 4 is partially broken away,to show the supporting frame for the drive assembly 125. The assemblyfor the drive mechanism 125 comprises two further frames, namely bottomframe 136 and vertical frame 137 secured between frames 135, 136.Electric drive motor 140 is secured to vertical frame member 137 by aseries of bolts 141 through mounting holes in its base 142. Electricdrive motor 145 is secured to bottom frame member 136 through suitablebolts 146. The cantilevered (right) side of frame member 136 issupported by stay bolts 147, 147 extending through and secured with topframe member 135. Suitable struts and supporting members are utilizedamong the three frame members 135, 136, 137 to secure the motor drivestructure 125 rigidly as a subassembly.

Top frame member 135 is secured to work table 100 by bolts 148 extendingthrough slots in frame member 135 to posts 158 extending from the bottomof work table 100. The motor drive assembly 125 is accordinglyadjustable in a direction transverse of work table 100 for the purposeof adjusting for a proper tension in the drive belt 121 connectingpulley 120 with drive pulley 151. Drive pulley 151 is driven by motor145. Similarly, belt 122 connects the pulley 120 to the drive pulley 152operated by electric motor 140.

A set screw 153 is shown in FIGURE 3 for adjusting the said transverseposition of the motor assembly 125 with respect to the fixed position oflead screw 112. Set screw 153 is rotatably mounted in a threaded post154 extending from frame 135 and is arranged to abut a post in bed 160.Suitable rotation of set screw 153 creates a desired tension in belt 121between pulleys 120 and 151. Similarly, motor 140 is slidably mountableon vertical frame member 137, and a set screw 155, mounted in threadedpost 156 secured to frame 137 adjusts the position of motor 140 on framemember 137 in a vertical direction. In this manner, the tension in belt122 between pulleys 120 and 152 is suitably adjusted. It is to beunderstood that the nuts on the respective bolts 141 and 148 aretightened when the proper tension in belts 121 and 122 is derived; andthat the bolts 157, 158 acting on set screws 153, 155 in theirrespective posts 154, 156 also secure the set screws after the saidadjustment.

Electro-magnetic clutches 160 and 161 are incorporated in the electricdrive system 125. Electro-magnetic clutch 160 is arranged between theoutput shaft 162 of motor 145 and drive pulley 151; electro-magneticclutch 161 between output shaft 163 of motor 140 and drive pulley 152.Electro-magnetic clutches 160, 161 may be of any suitable type andconstruction. Clutch 160 is connected to the electrical control system,as will be set forth, through its coil leads 164 extending fromelectrical connection block 165 of clutch 160. Block 165 is suitablymounted on bracket 166 fastened to extension support 167, in turnsecured to frame 137. Similarly clutch 151 is connected to the controlcircuit through its coil leads 168, extending from connection block 169of clutch 161. Block 16? is mounted on bracket 170 suitably secured toextension bracket 167.

FIGURE 5 diagrammatically illustrates the electric motive system 125 andits drive relationship with back gauge 105 through lead screw 112. Lowspeed electric motor 145 drives lead screw 112 when its associatedelectric clutch 160 is engaged. Engagement of electric clutch 160 isaccomplished when its clutch coil 171 is suitably energized by thecontrol circuit through its leads 164 in a manner to be described.Likewise, motor 149 operated lead screw 112 through belt 122 when itsassociated elect-ro-magnetic clutch 161 is actuated. Actuation of clutch161 occurs when its clutch coil 172 is suitably energized by the controlcircuits to be described, through its leads 168.

In the illustrated embodiment, motor 140 is a reversible three-phasealternating current induction electric motor operating off a commercial60 cycle line. Motor 140 is herein the high speed motor termed H.S.M. Inthe exemplary embodiment of system 125, the H.S.M. motor 140 is operatedat 900 r.p.m. The electric motor 145 is also a three-phase 60 cycleinduction motor, herein the lower speed motor and termed L.S.M. Motor145 is preferably an industrial gear down motor shown as havingstep-down gearing 173, 174. In this embodi- 8 ment, with output shaft163 of H.S.M. operated at 900 r.p.m., the output shaft 162 of L.S.M.operates at the low speed of 25 r.p.m.

Selective energization of clutch coils 171 and 172 correspondinglyfirmly connects pulleys 151 and 152 to the respective motors 145, 140through magnetic clutches and 161. Motor 145 is connected directly tothe leads 176 of motor 140 through leads 175. When clutch 160 of LSM.145 is energized to operate pulley 151, it is motivated in apredetermined direction at a low-speed of rotation, as is lead screwpulley 120. Both H.S.M. 140 and H.S.M. 145 are connected to main line177 through motor starter unit 180. The motors are connectible normallyfor forward drive, and into reverse by starter 180, as will bedescribed. High speed drive pulley 152 is arranged to turn lead screw112 in either direction and at the fast speed, in accordance with theactuation through motor starter 180 and clutch 161.

Motor starter unit 180 comprises two solenoids: solenoid 181 for forwardor Fd Start and solenoid 182 for reverse or REV. Start. When forward(Fd) start solenoid 181 is energized, normally open starter contacts 183of motor starter 180 are closed and directly connect leads 175, 176 ofmotor 140 and 145 to the main threephase line 177 through leads 178. Themain power line 177 is connected to the three-phase 6O cycle A.C. sourcethrough electrical switch 179. When the reverse (REV.) Start solenoid182 is instead energized, the three normally open contacts 184 of motorstarter 180 are closed and thereby and in turn also directly connect themotor leads 175, 176 to main line 177, except that two of these leadsare reversed in their three-phase relationship as compared to theconnections through contacts 183. This causes load reversal, and motors140 and 145 operate in the reverse direction, as will be understood.

Upon energization of REV. solenoid 182 for reverse operation of motors140 and 145, the normally closed contact 185 in the gang of contactors184 is opened to break in turn a possible circuit connection to theforward (Fd) Start solenoid 181 in series connection. Thus, when reverse(REV.) solenoid 182 is energized, the forward (Fd) Start solenoid 181 isdefinitely de-energized and the motor control unit 180 operates motor140 and 145 in only the one direction and at full speed. Forwardsolenoid 181 is connected to the control circuit, as shown in FIGURE 7,through 186, 187 which carry solenoid 181 and contacts 185 in series.The REV. start solenoid 182 is connected to the control circuit throughleads 188, 189. The forward solenoid 181 is controlled by manual remoteswitch 190 at leads 186, 187 to energize motors 140, 145 to the solenoid182 is controlled by manual remote switch 191 at leads 188, 189 tooperate the motors in the REV. mode or reverse control operation.

FIGURE 5A is a cross-sectional view through the pulley arrangement 120of the motor drive system 125. A basic pulley 75 has a V-groove forV-belt 121 to the LSM motor 145. Pulley 75 has a hub 76 keyed to backgauge screw shaft 112 at 77. The hub end 78 is hollow, and recessedinternally to be held at the end 79 of shaft 112 by nut 80. Pulley 75 isaccordingly firmly engaged with screw shaft 112. A second pulley S5coacts with V- bit 122 from HSM motor 140 for high speed driving. Pulley85 is firmly frictionally engaged with concentric pulley 75 through afriction disc 81 located between them. The pulleys 75, 85 are clampedtogether across friction disc 81, by means of compression spring 82.Spring 82 is held in compression by ball bearing 83 set onto hubextension 78 with lock nut 84.

The slipping pulley 75, 85 arrangement herein eliminates hard jolts instarting. It further eliminates extreme stresses on the driving belts(121, 122) in case the clutch that is deenergized (168, 161) hangs onlong enough to overlap the clutch which is being energized, since thetwo would try to drive the screw shaft 112 at different speeds, and abelt would have to slip. Either 7 belt 121, 122 is thus directlyconnected with screw shaft 112 to drive the back gauge 105.

The magnetic control tape 200 is driven in positive synchronism with theback gauge, as follows: A sprocket drum 205 is attached to the backgauge screw 112. This securement is shown schematically in FIGURE itwill be understood that sprocket 205 is mounted on and keyed to shaft112 and rotates therewith. The tape 200 has side sprocket holes 201, 202engaged with drum 205. Rollers 206, 207 keep tape 200 with the drum 205in engagement. A spring biased pulley 208 through spring 209 maintainstape 200 properly taut at its looped end. A magnetic head 210 is showncoacting with tape 200. Other equivalent arrangements are feasible. Thelinear positioning of the tape 200 with respect to fixed head 210 isthus accurately and proportionally related to the back gauge 105positions in the machine. The ends of tape 200 in FIG- URE 5, of course,extend to a sufiicient length to amply contain the longest controlprogram signals; and is packaged in a suitable compact region in themachine.

Magnetic tape circuitry and controls FIGURES 6 and 8 to 11 illustrateexemplary magnetic tape control systems in accordance with the inventionhereof. The system of FIGURE 6 utilizes two magnetic tracks A and B onmagnetic tape 200 and two magnetic heads 210, 211. The system of FIGURE8 is similar, except that only one magnetic head and tracks but threeand four magnetic heads respectively.

In FIGURE 6 the template 212 is represented as a narrow band of lightcolor material, with spaced dark marks 215, 216, 217, 218 representingpositions for stops of the back gauge 105. Such template 212 is shown inposition on the work table 100 of the cutting machine, in FIGURE 2. Anymaterial with contrasting marks may be used such as dull material withreflective marks, dark material with light marks and others. Such sheet212 may be of paper, plastic, metal or others and composition sheetvarying from .003 to .125" as is convenient. The stop marks, as 215, areaccurately imprinted, or drawn on individual template 212 for particularprograms of cutting for the machine. A magnetic square plinth 109 is setagainst front ribs 107 of back gauge 105, to hold down template 212 ontotable 100 in firm relation with the back gauge. The back edge (213) oftemplate 212 is thus pressed against back gauge front edge of 107 andheld by the magnetic clamping; and its side 214 aligned against themachine side gauge 109. As the back gauge [05 is motivated forwardly,the template 212 is firmly pushed in the forward direction, to theright, beneath the open knife blade and clamp.

An optical scanning unit 220 is used to scan template 212, for recordingthe program thereof on the magnetic :ape 200. Such unit 220 is indicatedin position over the vemplate in FIGURE 1, at the front of the machine.

The back gauge is motivated forwardly, desirably at ts rapid rate, asthe magnetic program of the stop posiions can readily be recorded atsuch rate, e.g. 420" per ninute by the invention system. The scanning ofthe narked stop positions 215 etc. on template 212 is schenaticallyindicated by unit 220 in FIGURE 6. Unit 220 :omprises a lamp 221focussed by lens 222 on the temrlate 212 marking region, creating a beam223 in exact ine with the knife edge cutting position K, as indicated.)ther phase relationships may be used between template LIld tapesignals.

A dark mark as 215 passing beam 223 interrupts the normally reflectedbeam 224 to photo-electric cell 225. team 224 is collimated by lens 226,and passed through narrow slit 227. It is realized that bright orreflective iarks (215) can be instead used on a template (212) f darkcolor. A passing mark 215, etc. accordingly hanges the beamedillumination intensity impinging upon ell 225, to in turn create asignal pulse therein. The exmplary cutter can trim-out between cuts.Hence marks (215 etc.) are drawn with a width of preferably half that,namely about .016". In practice, mark widths, i.e. in the direction oftemplate travel, of .005 to .020" are contemplated, with .015" asdesired. The corresponding width of slit 227 opening is made of theorder of .006". Such combination readily yields sharp or steep signalfronts at the photoelectric cell (225), which when shaped circuitouslyprovides steep pulse.

The photoelectric cell 225 may be of any desired type, a Clairex type CL3A cadmium selenide being found practical and economical. The cell issuitably biased, and its signals amplified by pro-amplifier, 228. Withselector switch 230 in the automatic position 229, the signals areimpressed on the A amplifier 231 which contains a limiter or clippercircuit to control peak levels of the signals. A pulse shaper andamplifier unit 232 thereupon provides a strong sharp pulse recordingsignal for the tape (200) track A, the Stop signal track. The controlswitch 235 is in the record position 234, conducting pulse signals whengenerated by a passing mark 215 (etc.) to the recording head 210.

Such stop pulse recording is synchronized on magnetic tape 200 with theknife K positions of the corresponding marks (215 etc.), as denoted inFIGURE 6. The head 210 position H on track A is in effective phase withthe knife position K of the template 212. In practice, the K and Hpositions are physically separated. However, in view of the synchronizedmovement of tape 200 and back gauge as described hereinabove (see FIGURE5), the template 212 is also in synchronism with the tape 200. In thismanner, each stop pulse signal 216a, 217a etc. recorded on track A is inphase with the corresponding stop marks 216, 217 etc. Subsequent pick upof these stop signals, and control of the back gauge stopping actiontherewith, will thereby precisely reproduce signals on tape 200 for thecutting program marked on template 212.

Moving control switch 235 to the read position 236 connects magnetichead 210 to the input of a suitable A amplifier 237 of picked up stoppulses 215a, 216a, etc. The pulses are picked up when tape 200 is movedpast head 210 on the forward movements of the back gauge in its stackcutting operation. In the illustrated tape, pulse 218a precedes pulse216a, etc. The amplified read signals are passed to the stop relayamplifier 238. The output 239 of amplifier 238 is connected to energizea stop relay, 239a, wherein (as will be set forth), the energy to bothdrive clutches 171, 172 (FIGURES 5 and 7A) is thereby cut-off, and thedrive of back gauge 105 stopped.

An important feature of the present invention is to substantiallydecelerate the 'back gauge forward speed through magnetic signalling,for a predetermined short interval before the stop pulses are reached.Towards this end a slow signal is impressed upon the magnetic controltape (200) just preceding each stop signal thereon. The slow signals inturn control the actuation of a slow relay connected with the back gaugedrive to effect a slow motive drive therefor. This is readilyaccomplished by energizing relay 171 of low-speed clutch while releasingrelay 172 (see FIGURES 5 and 7A). The back gauge drive will thereupon beat about 12" per minute, by the low speed drive of 25 rpm. in the aboveexample, rather than at 900 rpm. for the 420" per minute forward rate(as will be set forth).

In practice I have found that a slow drive interval of about one inchtravel of a commercial back gauge is sufficient to satisfactorilydecelerate it for dead stoppage upon a subsequent stop signal. Such oneinch travel corresponds to a one-seventh of a second interval at thenormal forward rate of seven inches per second. On the tape 200 ofFIGURE 6 the slow areas ahead of each stop signal (216 etc.) arearranged on a companion track B, and indicated at 250 and 251. The basicone-inch (or oneseventh of a second interval at fast rate), is indicatedas A in length. The slow signal area is thus A long.

The area 251 however is A long only ahead of stop signal 218a, andextends further by the region A unto adjacent stop signal 217a. Suchextended slow signal areas are used in each case where successive stopsignals are less than the predetermined interval A apart, here by l".

The fast forward movement of back gauge is thereby not initiated unlessit can be slowed down in the A interval ahead of each stop signal aslater described. This feature permits trim out cuts without speed upsand overshoots.

The control record-making system, circuitry and procedures hereof arearranged to effect slow signal areas in the hereinabove described form.Control switch 235 is moved to the dotted position 235a, and contact 236for connection to read A amplifier 237. Control switch 240 is connectedto record position 241. Magnetic head 211 is thereby connected to theoutput of the B track recording amplifier 242. Switch 243 is closed oncontacts 244 connecting head 210 to head 211 through a time delayingcircuit 245 to the stop pulse read (A) amplifier 237.

In recording the slow areas on tape 200, in the system of FIGURE 6, thetemplate is removed after the stop signals are recorded on track A. Thenthe back gauge and tape 200 are moved in the reverse direction, at thesame 420" per minute rate. Whenever a stop pulse signal as 215:: passeshead 210, the read pulse is amplified at 237 and impressed-on timedelaying unit 245. During a designed interval thereafter, unit 245activates electronic gate 246 to send signals from oscillator 247 into Bamplifier 242. These signals at oscillator (247) frequency are therebysuitably amplified and impressed on magnetic head 211 for the durationthat delaying unit 245 is active or alive. In the exemplary system theunit 245 has an active delaying life of one-seventh of a second aftereach stop pulse is impressed upon it from A amplifier 237. The exemplaryoscillator (247) frequency is of the order of 10,000 to 25,000 cyclesper second. Other values may of course be used.

The slow signal area 250 is accordingly one-inch long (A), as thereverse 7" per second travel of track B is recorded for fi second. Thebasic slow signal is thus recorded at 10 kilocycles. Such high initialfrequency is recorded so that an appreciable frequency is still ineffect when the slow drive of 12 per minute occurs during the slowedformed control drive. The slow control frequency picked up from track Bstarts at 10 kilocycles. However, as the back gauge and therefore thetape speed are reduced by one-thirty-sixth in the exemplary drive, theslow control frequency finally picked up becomes 275 cycles per second.All frequencies in this range are readily detected and used for controlof the slow relay 257a.

In operating the back gauge and cutting machine with the inventionsystem, the control tape 200 is motivated in the forward direction, asindicated. Before each stop signal reaches track A head 210, acorresponding slow signal area reaches the track B head 211 priorthereto. Thus slow signal area 250 is read by B track head 211 prior tostop pulse by A track head 210. During the control cycles both controlswitches are at the read positions: switch 235, at position 235a withcontact 236; and switch 240, at position 240a with contact 248. Thecontrol signal (250) is impressed upon B amplifier 255 that reads theslow signal, amplifies it, and impresses the resultant control signal onslow relay amplifier 256.

Amplifier 256 also contains a detector that responds to the varying slowsignal frequencies being picked up. As stated above, the exemplary slowsignals recorded on track B is 10,000 cycles per second for a 420" perminute track speed. When the back gauge and track is slowed down to 12"per minute, the frequency picked up becomes 275 cycles per second. Theamplifiers 255, 256 and the detector therein are made to be readilyresponsive to this range of frequencies. The output of unit 256 is 10connected by lead 257 to energize the system slow relay 257a (see FIGURE7A). Such energization starts just as the slow control areas (250, 251)of track B are read, and is maintained until the slow areas just passthe B track head 211.

It is noted that the stop signal 216a on track A is positioned to beread by the A track head 210 just as the corresponding slow signal areahas been fully read or leaves B head 211. Thus the stop relay 239a,through amplifiers 237, 238 is directly energized as the slow drivecycle is completed (see FIGURE 7A). The back gauge, being at the sloweddown speed thereupon stops, accurately positioned by the correspondingstop signal position. The operator thereupon presses the usual knifeoperating button to effect the cutting cycle on the pile of sheets. Agreen signal light may be energized when the stop relay is actuated, toalert the operator. After the cutting operation, the operator manuallypresses the fast start button 248 to close on contacts 249 and energizeclutch coil 172 and high speed clutch 161 (as described in connectionwith FIGURE 7A hereinafter). The back gauge is thus again moved forwardat its fast rate, and maintains its speed until the next successive slowsignal area is read by the system. When the cutting program is completedthe operator either pushes the reverse button 191 (see FIGURE 5), or alimit switch is activated at the end of the back gauge movement wherebyassociated circuitry (not shown) is employed to cut-out all forwardcircuits, including action by the magnetic control amplifiers in thereverse traverse of the back gauge.

A further important feature is the incorporation of the extended slowsignal areas, as area A of signal 251 in track B, to take care of trimout operations. The slow relay 257a energization by lead 257 ismaintained thereby, past the stop signal 218a, until the position justbefore the next stop signal 217a, for the duration of the A interval(251). However, the stop signal 218a, being read by head 210 on the Atrack, energizes the stop relay, 239a (FIGURE 7A) through lead 239, andthe back gauge is stopped. After the cutting operation, the back gaugeis restarted forward by either a manual or automatic switching. Asmotion of the tape 200 is required in order for any recorded signalon'tracks A, B to be picked up, the back gauge is always restarted inslow speed for a period corresponding to 4 on tape 200, through a timedelay relay (not shown). In this case, upon such restarting action, theslow" relay is immediately energized by the A area signals. The backgauge accordingly progresses at the slow speed until the stop signal217a again stops the back gauge. When the back gauge is stationary, sois the control tape 200. The slow restarts of the back gauge permits theselective control action between tracks A, B.

Relay circuitry to effect the above described operations is readilyapparent to those skilled in the art. The stop relay 239a, whenenergized by lead 239 from stop relay amplifier 238 in response to astop signal impulse from track A, 216a, 217a, 218a, etc., is connectedin the motor drive to deenergize both clutch coils 171, 172 throughtheir respective leads 164, 168 (see FIGURES 5 and 7A). Also theseclutch coils are kept de-energized until the knife cutting operation iseffected. The stop action is thereupon lifted either manually orautomatically in response completion of the cut and return of the knifeblade and knife clamp to their inoperative position above the worktable. The fast clutch coil (172) is thereupon connected to be energizedto motivate the back gauge forward. Upon reaching the next slow signalarea, 250, 251, etc. the slow clutch coil 171 is energized through lead257 and the slow relay 25701. The fast clutch coil 172 is de-energizedat the same time. When the next stop signal on track A is reached thestop" relay thereupon stops all drive to the back gauge.

FIGURE 7A illustrates in schematic form circuitry to effect theaforesaid control actions on motor drive 125 through the magnetic systemslow and stop relays 239a, 257a. Contact 164 extends from the low speedclutch coil 171; contact 168, from the high speed clutch coil 172 (seeFIGURE 5). A common source of energy as battery 249 may be used forcoils 171, 172. The deenergized position of control relays 239a, 257a isas shown in the diagram, with biasing springs therefor. Relay contactors23% and 257b are closed on their contacts.

Thus, when fast contactor 248 is closed, either manually orautomatically as a limit switch, the circuit between source 249 and fastclutch coil 172 is completed. The back gauge is thereupon moved forwardat the high speed (except for the initial time delay of trackage at theslow rate hereinabove stated). Upon subsequent, or prompt energizationof the slow relay 257a through the aforesaid magnetic control action,contactor 257b opens and contactor 257c closes. As the contactor 239s ofthe stop relay is also closed (normally) the slow clutch coil circuitbecomes energized as the fast clutch coil is disconnected. The low speedclutch 166 thereupon drives the back gauge at the low forward speed.

When the stop" amplifier 238 becomes energized, stop" relay 239a opensits contactors 23911 and 2390, to deenergize both clutch coils 171, 172.This serves as an override on any manual, automatic or magnetic controlaction on the clutches 160, 161, which prevents drive of the back gaugefor the duration of the stop relay 239a energization.

In place of the photoelectric scanner 220 and preamplifier 228 (FIGURE6), simple manual recording of the stop signals 215, 216, etc., may beemployed. The switch 230 is closed on manual contact 252 in circuit witha battery 254 or equivalent source. Whenever push button switch 253 isclosed, a signal pulse is transmitted into A amplifier 231. Thiscorresponds to a scanned pulse obtained from template marks 215, 216,etc. The result through amplifiers 231, 232 is the same, in that a stopsignal is impressed on magnetic tape 200. Back gauge 105 is motivated tothe stop positions desired in a manual program operation; and keptstationary while the stop pulse is impressed on the also stationary tape209. The successive stop pulses for the program are correspondingly madeon tape 200 through the pressing of button switch 253 at each stopposition. A condenser charged while switch 253 is open can be dischargedinto amplifier 231. in place of battery 254. The preparation of thetrack B slow area signals is accomplished during reverse travel of tape200 in the manner above described.

FIGURE 7 is a circuit diagram of the portion of the tape control systemof FIGURE 6 relating to time delaying unit 245 and gate 246. In makingthe track B signals, :he amplified read stop pulses (216a, 217:: etc.)of rack A are introduced to delaying unit 245 through am- Jlifier 237and closed switch 243, as seen in FIGURE 6. the pulses are fed to lead259 and diode 260 in time delayng unit 245. Condenser 261 connectsbetween diode 260 tl'ld ground lead 262. Resistor 263 shunts condenser261. I second resistor 264 connects to the diode-resistor connecionpoint 266 from negative bias lead 265. The time Telaying circuitconstant, one-seventh of a second in this Xample, is derivedfromselection of the parameters of esistors 263, 264, the diode 260 andcondenser 261, in a Janner Well known in the art. Other desired delayingalues are obtained by change of these parameters.

The stop pulse introduced to diode 260 thereby reates a signal ofcontinuing duration of the delay At eriod of one-seventh of a second.This delaying signal 1 directly amplified by a PNP transistor 270suitably onnected with resistors 267, 268, 269 and negative bias me 265.

The output of transistor 270 is connected to the gate 46 through leads271, 272. Gate 246 comprises two NP transistors 273, 274 with theiremitters interconzcted by lead 275, and their collectors interconnectedby the windings of coupling transformers 276, 277 to form a loop 280.The transistor bases are interconnected to input lead 271 throughresistors 278, 279.

During the quiescent mode, no signal impinges on transistors 273, 274from delaying unit 245, and the collectorto-emitter impedance acrossboth transistors 273, 274 is very high to efiectively cut-off theoscillator 247 signals in the gate loop 280. Upon signal activation ofgate 274, the loop 280 becomes conductive and the 10 kilocycleoscillator (247) signals complete the circuit to the primary winding oftransformer 276. A 10 kilocycle signal is thereby impressed on the Bamplifier 242 for recording the slow signal areas on the B track of tape200 (see FIGURE 6). The oscillator sign-a1 is passed by gate 246 toamplifier 242 for the duration of the effective life of the delayedpulse in delaying unit 245. As stated, a single stop pulse into unit 245results in a one-seventh of a second opening of gate 246 and a one-inchslow signal (250) for the 420" per minute back gauge rate. Where twostops signals, as 217a, and 218a are closer together than such interval,the second stop pulse impressed on delaying unit 245 reinitiates in fullthe delay interval (At) which extends from the last pulse by the Atamount.

FIGURE 8 illustrates a modification of the two-track two-head system ofFIGURE'6, utilizing a single track C and single head 285. The omittedcircuit portion is the same as that of FIGURE 6. The control switch 286is shown in position at contact 287, which is for both controlling theback gauge from a programmed track, or for creating the slow signalareas 290, 291, etc. on track C. The stop signals 292, 293, 294, etc.are recorded on track C through the scanning amplifier and shaper 232units as in FIGURE 6 while switch 286 is in position 2861: on contact288. Moving tape 200 in the reverse direction, at its fast rate, passesthe stop impulses into the A read amplifier 237, through low-pass filter295. The A read amplifier 237 in turn impulses time delaying unit 245through closed switch 243. The 10,000 cycle per second slow signal isthereupon gated to B record amplifier 242 as in the system of FIGURE 6,and im pressed on the head 285 through filter 296 tuned to the 10kilocycles. A record switch 297 is closed during the slow recordingoperation.

The single track (C) method utilizes a low pass filter 295 to preventthe high frequency, 10 kilocycles, from bypassing to the A amplifier237.

Also the tuned high frequency, 10 kilocycle, filter 296 prevents anyhigh pulse signals passing beyond or interacting with amplifier 242 orthe gate circuitry. The recording of the 10 kilocycle signals on track Cis made without biasing signals so that no deterioration of the alreadyrecorded stop pulses 292, 293 etc. occurs. The extended (A') slow signalarea 291 is recorded as in the FIGURE 6 method, but right on top of thestop signal 294. The separation filters used herein effect the selectivecontrol action thereby.

In using the single track control system of FIGURE 8, the recordswitches 243 and 297 are opened, control switch 286 left on contact 287,and switch 298 is closed. A high pass filter 299 is responsive only tothe slow signals from areas 290, 291, etc., and the low pass filter 295,only to the steep stop pulse signals 292, 293, etc. In the exemplarysystem, the low pass filter 295 passed all frequencies only from aboutcycles down to DC; while the high pass filter 299 passed onlyfrequencies from about 100 cycles up to 10 kilocycles and above. Thusthe slow signal areas 290, 291, etc. activate only the B read amplifier255 and the corresponding slow circuits controlled thereby; while thestop signals 292, 293, etc. pass only to the A read amplifier andactuate the associated stop circuitry.

The single track system can also be used with two magnetic heads spacedapart a desired distance along the track, such as 1.5 inches. FIGURE 9diagrammatically indicates such an alternative system, using a track D.The

slow signal head 211 is positioned ahead to intercept the signals ontrack D ahead of head 210. Control switch 300 on contact 301 connectshead 211 to high pass filter 299, as in FIGURE 8. The slow signal headis thus impervious to the stop pulses 305 on track D, and properlyactivates the slow control circuits 255, 256. Conversely, stop head 210behind slow head 211' is connected to low pass filter 295, andselectively only activates stop circuitry 237 upon stop signals 305passing head 210. It is noted that the stop signals (305) are spacedphased behind the end 307 of slow signal area 306 by the distance equalto the fixed displacement of heads 210, 211'. In this way, all thecontrol relationships established by the described FIG- URE 8 system aremaintained herein, as will now be understood.

FIGURE 10 illustrates a system with two tracks E, F, using three heads210, 211 and 310. This arrangement is similar to the two-head system ofFIGURE 6 except that a third head, 310, is used to eliminate the use ofa time delaying unit (245). This is accomplished by positioning head 310by the desired interval A behind the main stop signal head 210.

When the intitially recorded stop signals on track are passed in reversedirection under heads 210 and 310. they are read at the A time apart.When the stop pulse signal is first read by head 210 it initiates thegating action at 246' through A amplifier 237 and switches 235a, 243.Head 211 commences to record the slow signal area on track F, andcontinues to do so until the same stop pulse reaches head 310. Amplifier311 passes the new pulse to gate 246' which is arranged to thereupon cutoff the oscillator signal (247) to head 211. Operation of the tape 200and tracks E, F then is the same as for tracks A, B of FIGURE 6.

The two track (G, H) four head (210, 211, 310, 312) system of FIGURE 11is basically similar to that of FIGURE except that a fourth head (312)is utilized to record the slow signal control areas along track H in theforward direction and while the slow signals are recorded on track G.This is accomplished by positioning heads 310 and 312 ahead of main stophead 210 by the A interval, as indicated. Upon the initiation of a stoppulse through shaper amplifier 232 for head 210 and stop track G, asimultaneous pulse is transmitted from amplifier 232 to gate 246 throughclosed switch 243'. This sets off oscillator 247 signals into B recordamplifier 242, and head 312 starts recording a slow signal control areawhile tape 200 is progressing in the forward (scanning) direction.

This recording continues until the initial corresponding stop signalrecorded by head 210 is picked up by auxiliary head 310' on track G andimpressed on gate 246 through amplifier 311. The slow signal arearecording is stopped and the composite slow-stop signals on tracks G, Hare directly completed for subsequent control action as in the system ofFIGURE 6.

The magnetic tape 200 is suitably based on 35 mm. motion picture filmdimensions, with sets of sprocket holes 201, 202 on either longitudinaledge thereof (see FIG- URE 6. Conventional finality magnetic coating isapplied to the operating surface of tape 200. The sprocket drum 205 isthus a standard component for driving tape 200. The securement of drum205 to an end section of the back gauge drive feed screw shaft 212 (seeFIGURE 5) affords a precise positive drive for tape 200, synchronizedwith all movements of the back gauge 105.

The accurate control of the back gauge programming is thus facilitated.In the exemplary cutting machine, one revolution of the feed screw 112effects a 1" motion to the back gauge. With the circumference of drum205 approximately 4.5 inches, the tap 200 speed and travel is 4.5 timesthat of the synchronized back gauge. A different ratio therebetween mayof course be employed.

The expanded travel of the synchronized tape 200 affords better magneticsignal control and improved accuracy as compared to a one-to-one ratio.

On the exemplary 35 mm. tape (200) width, it is practical to employtwenty-four independent magnetic control tracks. In the control systemsof FIGURES 6, 10 and 11 utilizing track pairs, twelve distinct cuttingprograms are set up on one tape; and those of the single track systems,FIGURES 8 and 9 contain twenty-four separate programs. One readilyshifts the magnetic heads transversely across the tape, to select thedesired program tracks. The selector 126 (see FIGURE 1) has an indicatorto point out its track position. It is desirable to have selector 126 atthe front end of the machine (at right) with the other controls for theoperator.

Once a program is recorded on a track position, it is charted, and usedan indefinite number of times with identical program control operation.When it is desired to change a recorded program, one initially erases itmagnetically by a suitable erase signal, and then records a new programin its place. The tape 200 lasts indefinitely, is readily replaceable inits transport means including drum 205, pulley 208, etc. (see FIGURE 5)by another program tape.

When it is desired to record a back gauge control program on the tape(200), the corresponding template 212 is positioned along side gauge 214with back gauge in its rearmost position. The magnetic square plinth isset against the elements 107 of the back gauge over the end 213 of thetemplate (see FIGURES 1 and 2) to firmly hold the template as the backgauge is moved forward. The photo-electric scanning unit 220 is then setover the template 212 and in squared flush position against the forwardclamp (with knife up) and the table 100, as indicated in dotted lines inFIGURE 1.

A groove at under side of unit 220 is provided for template 212 to passunder the optical section thereof, while the remaining base is flush onwork table 100. Suitable magnetic clamps firmly hold scanner 220 inposition during the scanning and recording operation.

An electrioal cable 203 extends from scanner 220 to energize it andinterconnect its scanning circuitry with the magnetic control system(see FIGURE 6) housed in base 103. The scanning unit 220 and its cable203 is placed in a convenient recess 204 in base 103 when not in use.

It is to be understood that in place of the removable scanner 220, onefixed onto the cutting machine at any practical location adjacent thetemplate passage may be used. In the latter case, it may be arranged tobe swung into location. Also, in place of a separate template for theprogram definition, one could scan the suitably printed top sheet on thepile to be cut.

In any event, the basic principles, features, arrangements andconstruction of the invention hereof are subject to variations andmodifications by those skilled in the art, without departing from thespirit and scope of the invention as defined in the following claims.

I claim:

1. A method of controlling the movement of a back gauge of a papercutting machine in accordance with a recorded program, for cuttingpredetermined lengths of paper from a stack, which method comp-rises thesteps of recording a series of stop signals and respective associatedslow signals on a magnetic tape wherein said slow and stop signals areeach recorded at a respective frequency and wherein a slow signalprecedes a stop signal, sensing said signals so as to initially sense aslow signal prior to its respective stop signal, and using said sensedsignals to effect initial slowing and subsequent stopping of said backgauge for a sequence of movements thereof.

2. A method as set forth in claim 1, including the step of recording theslow signals so as to be elongated in a direction which corresponds tothe direction of movement of said back gauge and the step of recordingthe associated stop signals as relatively short pulses.

3. A method as set forth in claim 1, wherein the re- References Cited bythe Examiner cording frequency Of said 510W signals is highiil' than thefrequency of said stop signals.

4. A method as set forth in claim 1, including the 2,249,324 7/1941346*34 step of recording the slow signals so as to be elongated 5218601705 11/1958 P 214]'6 in a direction which corresponds to thedirection of move- 2,992,578 7/1961 HnPar 83 71 3,012,104 12/1961 Klers179-100.2

ment of said back gauge and the step of recording the associated stopsignals as relatively short pulses, wherein the recording frequency ofsaid slow signals is higher than the frequency of said stop signals.

ANDREW R. JUHASZ, Primary Examiner.

1. A METHOD OF CONTROLLING THE MOVEMENT OF A BACK GAUGE OF A PAPER CUTTING MACHINE IN ACCORDANCE WITH A RECORDED PROGRAM, FOR CUTTING PREDETERMINED LENGTHS OF PAPER FROM A STACK, WHICH METHOD COMPRISES THE STEPS OF RECORDING A SERIES OF STOP SIGNALS AND RESPECTIVE ASSOCIATED SLOW SIGNALS ON A MAGNETIC TAPE WHEREIN SAID SLOW AND STOP SIGNALS ARE EACH RECORDED AT A RESPECTIVE FREQUENCY AND WHEREIN A SLOW SIGNAL PRECEDES A STOP SIGNAL, SENSING SAID SIGNALS SO AS TO INITIALLY SENSE A SLOW SIGNAL PRIOR TO ITS RESPECTIVE STOP SIGNAL, AND USING AND SAID SENSED SIGNALS TO EFFECT INITIAL SLOWING AND SUBSEQUENT STOPPING OF SAID BACK GAUGE FOR A SEQUENCE OF MOVEMENTS THEREOF. 